Which description best describes the graph? a graph is shown. a straight line begins at the upper left side of the coordinate plane and moves down towards the right side. the line crosses the y-axis at y equals 3 and the x-axis at x equals 1.5 linear increasing linear decreasing nonlinear increasing nonlinear decreasing

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.